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I've reviewed a ton of high-tech smart glasses for Lifehacker, and this early Black Friday deal on the RayNeo Air 3s Pro display glasses is excellent. They are on sale for $249 on Amazon (originally $299) until Dec. 1.

If you're not familiar, these smart glasses basically put a high-definition display in your pocket, projecting the equivalent of a 201-inch TV in front of your face—so if someone on your list is tech-inclined and you want to blast 'em with a pure "whoa" present, here you go. They'll even fit in a stocking.

There are other glasses that do the same thing, but the Ray Neo Air 3 Pro hit a nice sweet spot between inexpensive and good quality. Check out m

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